What battery storage systems does Pennstar Solar install?

We install Sigenergy SigenStor, Tesla Powerwall 3, Enphase IQ Battery, Sol-Ark, EG4, FranklinWH, and Fortress battery systems. The Sigenergy system supports V2X (Vehicle-to-Everything) bi-directional charging.

Solar panels installed on a residential home in Southeastern Pennsylvania by Pennstar Solar

Solar + Battery Backup = Total Energy Security

Stop Paying PECO. Start Owning Your Power.

Q: Will solar panels keep my power on during a grid outage?

Solar panels alone will shut down during a grid outage. However, when paired with a battery storage system like Tesla Powerwall, your home continues to have power.

PECO rates are at $0.22/kWh and climbing every year. Solar panels eliminate your electric bill. Battery storage keeps your home running when the grid goes down. Together, they deliver energy independence and long-term savings you can count on.

Get Free Savings Estimate Solar + Battery Solutions

100% Financing / $0 Down

Whole-Home Backup Available

5-Year Workmanship Warranty + Optional 30-Year Upgrade

$12

Target PECO Bill

8-10 yr

Typical Payback Period

15-20+ yr

Of Savings After Payback

24/7

Battery Backup Protection

How Do Solar + Battery Help?

Solar + Battery = Financial Freedom & Energy Security

Solar eliminates your electric bill. Battery storage protects your home. Together, they deliver complete energy independence.

Eliminate Your PECO Bill

A properly sized solar system offsets 80-100% of your electric bill. PECO's 1:1 net metering credits you at the full retail rate ($0.22/kWh) for every kWh you export.

How net metering works

Earn SREC Income

Pennsylvania pays you for every 1,000 kWh your system produces. A typical 10 kW system earns $200-$300 per year in SREC income on top of your bill savings.

How PA SRECs work

Never Lose Power

Battery backup keeps your lights, fridge, internet, and HVAC running during grid outages. Solar recharges your batteries daily for potentially unlimited backup duration.

Compare batteries

Protect Against Rate Hikes

Solar can reduce or eliminate your electric bill for 25+ years. Every time PECO raises rates, your savings increase. Solar is a hedge against utility inflation.

See cost & ROI

Sigenergy

SigenStor

6 / 9 kWh Modular · LFP · V2X

Tesla

Powerwall 3

13.5 kWh · 11.5 kW · LFP

Enphase

IQ Battery 10C

10 kWh Blocks · 7.08 kVA · LFP

What Happens When the Grid Goes Down?

When the Grid Goes Down, Your Home Stays On.

Power outages are becoming more frequent and lasting longer across Southeastern PA. A solar + battery system means you never have to worry about losing power again. Your solar panels recharge your batteries every day, providing clean, quiet, unlimited backup — unlike a gas generator that runs out of fuel.

Whole-Home Backup

Keep everything running — lights, HVAC, refrigerator, internet, medical equipment, and more.

Solar-Recharged Daily

Your batteries recharge from solar every day, providing potentially unlimited outage protection.

Silent & Clean

No noise, no fumes, no fuel runs. Battery backup is automatic, instant, and maintenance-free.

Storm-Ready

Pre-charge your batteries before severe weather. Smart systems detect incoming storms automatically.

Compare Tesla, Sigenergy, FranklinWH & Enphase

New for 2026

V2X Bidirectional EV Charging

Your EV battery is 5–7x larger than a home Powerwall. With Sigenergy's V2X charger, your EV becomes a massive backup power source — enough to run your home for 2-4 days.

Learn about V2X

Where Does Pennstar Install?

Solar + Battery Installation Across Southeastern PA

Based in Lower Merion Township, Pennstar Solar serves homeowners and businesses throughout Southeastern Pennsylvania. Our commitment is local — we have no plans to expand beyond this region.

Montgomery County

Lower Merion, Ardmore, Penn Valley

Delaware County

Media, Wayne, Haverford

Bucks County

Doylestown, New Hope, Newtown

Chester County

West Chester, Malvern, Paoli

Philadelphia

Chestnut Hill, Manayunk, Mt Airy

View all service areas

What Do Customers Say?

What Our Southeastern PA Neighbors Say

Reviews from homeowners who took control of their energy costs.

Rated 5.0 from 27 reviews on Google

“Mike made the whole process of sizing and installing solar easy. The quotes provided were clear and concise, and Mike was very accommodating when I requested additional quotes to include battery backup. The installation process went very smoothly, and his crew did an excellent job. Mike and his team ensured that all permits were secured, PECO authorization to operate was obtained, and follow-up inspections were performed in a timely manner. My house is now running on solar, and I have the peace of mind of self-sufficiency during grid outages. If you're interested in solar, I would highly recommend Pennstar!”

Daniel F.

Google review

“Pennstar made learning about and selecting the right solar installation for my house very easy. They were accommodating to all our requests and helpful in answering all of our questions and concerns. They are a very knowledgeable organization that was also extremely friendly throughout the installation process - which only took a few days. Their estimates of solar consumption were spot on. Even with a heat pump and an EV, I am now producing enough electricity to cover all my needs.”

Christopher S.

Google review

“From start to finish Mike was great. He clearly takes pride in the work and knows his stuff. No pressure sales, no BS like other solar sales operations. I wish I had found him years ago. Clean install with no hassles and attention to detail. 10/10”

Hugh E.

Google review

Leave us a review on Google

Optional 30-Year Solar Insure Protection

Pennstar Solar now offers the Solar Insure SI-30 Solar upgrade for new PV installations. Add 30-year protection for eligible component defects, labor, and qualifying roof penetrations. Learn more.

Request a Proposal

Common Questions

Solar Savings & Battery Backup FAQ

Everything Southeastern PA homeowners need to know about solar economics and grid resilience.

In Southeastern PA, solar panel installation typically costs between $2.50 and $3.00 per watt before incentives. A small 5 kW system costs approximately $15,000, and a more typical 10 kW residential system averages about $26,500 before incentives. Pennsylvania homeowners also earn income through the PA SREC (Solar Renewable Energy Certificate) program, which further reduces the effective cost. With PECO's 1:1 net metering and SREC income, the economics are compelling. 100% financing is available with $0 down.

The typical payback period for a grid-tied solar system in Southeastern Pennsylvania is 8 to 10 years. This factors in Pennsylvania SREC income (currently worth approximately $15-$25 per SREC) and PECO's 1:1 net metering program, which credits you at the full retail rate for excess electricity sent to the grid. After payback, your solar system generates tax-free savings for another 15-20+ years.

Most homeowners in Southeastern PA can offset 80-100% of their PECO electric bill with a properly sized solar system. With PECO rates at $0.22/kWh and rising, a typical 10 kW system saves $2,500-$3,500+ per year on electricity alone. Add PA SREC income on top of that, and you're looking at even stronger returns. Over 25 years, total savings often exceed $80,000-$100,000.

Solar panels alone will shut down during a grid outage for safety reasons. However, when paired with a battery storage system like Tesla Powerwall, Enphase, or Sol-Ark, your solar panels will continue to charge your batteries and power your home even when the grid is down. We offer both whole-home and essential-load backup configurations, so your lights, refrigerator, internet, medical equipment, and HVAC stay running through any outage.

Grid reliability has declined significantly across Southeastern PA and the broader PJM Interconnection region. Severe weather events, aging infrastructure, and increased demand are causing more frequent and longer outages. Battery storage gives you energy independence — your home keeps running regardless of what happens on the grid. Many homeowners also use batteries for time-of-use arbitrage, storing cheap solar energy during the day and using it during expensive peak hours.

We are certified installers of Tesla Powerwall, Enphase IQ batteries, Sol-Ark, EG4, Sigenergy, FranklinWH, and Fortress battery systems. Each brand has different strengths — Tesla Powerwall is great for seamless whole-home backup, Enphase offers modular scalability, and Sol-Ark provides powerful hybrid inverter solutions. We help you choose the right system based on your backup needs, budget, and whether you want whole-home or critical-load coverage.

Net metering allows PECO customers to send excess solar electricity back to the grid and receive a credit on their bill at the full retail rate. Pennsylvania offers 1:1 net metering, meaning every kilowatt-hour you export is worth the same as every kilowatt-hour you consume. Credits roll over month to month, so your summer overproduction offsets your winter bills. Important: PECO performs an annual true-up on May 31st — any remaining excess credits are cashed out at the energy-only rate (excluding delivery and transmission), so proper system sizing matters.

SRECs (Solar Renewable Energy Certificates) are credits generated for every 1,000 kWh (1 MWh) your solar system produces. In Pennsylvania, electric utilities are required to purchase SRECs to meet renewable energy mandates, creating a market where homeowners can sell their SRECs for additional income. A typical 10 kW residential system generates about 12 SRECs per year. SREC prices fluctuate but currently trade in the $15-$25 range in the PA market.

Yes. We offer 100% financing with $0 down, so you can start saving on your electric bill immediately without a large upfront payment. In many cases, your monthly loan payment is less than what you were paying PECO — meaning you save money from Day 1. We'll walk you through all financing options during your free consultation to find the best fit for your budget.

Stop Overpaying. Start Saving.

Find out exactly how much you'll save with solar — and how battery backup protects your home. Free, no-commitment estimate.

Get Free Savings Estimate Call 610-900-6405